Grant Renewable Technologies...biomass boilers, solar thermal systems and hybrid technologies, the Grant brand has established a reputation for quality that is second to none. Here

Grant Renewable Technologies

Multiple package solutions. All from Grant.

Grant Engineering has been designing and manufacturing reliable, efficient and innovative heating products since 1978. Specialising in condensing oil-fired boilers and an expanding range of renewable appliances including air source heat pumps, biomass boilers, solar thermal systems and hybrid technologies, the Grant brand has established a reputation for quality that is second to none.

Here at Grant, we combine precision engineering, innovation, performance and value for money to produce sustainable heating solutions that are trusted by installers and homeowners alike. While the technology is sophisticated, Grant products are easy to install, straightforward to maintain and backed-up by excellent after-sales support. When customers choose Grant, they also get the added peace of mind that comes with the excellent reliability and superb efficiencies of our products.

At the heart of everything we do is continuous product development. Every Grant product incorporates the latest technologies and materials which enable them to exceed performance and environmental standards ensuring that they make the best use of our natural resources. Consequently, Grant products meet the heating needs of tomorrow, today.

Think Heating. Think Grant.

Contents

Introduction 4

Package Solutions by Grant 6

Aerona3 Air Source Heat Pumps 8

Aerona3 R32 range introduction 10

Performance & efficiency 12

Aerona3 packs 13

VortexAir Hybrid 14

Accessories 16

ErP & hot water packages 17

Aerona3 technical specifications 18

VortexAir Hybrid technical specifications 19

Wave High Performance Cylinders & Thermal Stores 20

Wave range introduction 22

High Performance cylinder range 23

Duowave solar cylinder range 24

Thermawave thermal store range 25

High performance range technical specifications 26

Duowave range technical specifications 28

Thermawave range technical specifications 30

Grant Solar Thermal 32

Solar thermal introduction 34

Sahara solar range 36

System design 37

Components 38

CombiSOL & WinterSOL 39

Uflex Underfloor Heating 40

Underfloor heating introduction 42

Uflex range 44

Uflex MINI range 45

Controls 46

Afinia Aluminium Radiators 48

Afinia range introduction 50

Afinia technical specifications 51

Solo Fan Convectors 52

Solo range introduction 54

Solo range technical specifications 55

G-Cert MCS certification scheme 56

ServicePlan 57

Guarantees 58

Product list 60

Package Solutions by Grant

Renewable technologies are becoming increasingly popular amongst homeowners who want their property to be heated by a sustainable system. Consumer demand and industry legislation are driving manufacturers to develop products which have less impact on the environment, helping householders to reduce their carbon footprint and to lead greener lifestyles. Consequently, products which offer viable alternatives to traditional fossil fuel heating systems are playing a more prominent role in today’s market with householders opting to install cleaner, renewable heating products within their home.

To meet this growing demand for greener heating solutions, Grant has carried out extensive research and development to design, manufacture and supply a comprehensive range of renewable heating technologies. Grant’s renewable product portfolio consists of the heat sources and complementary products including a growing range of heat emitters. Not only can installers turn to Grant for a complete range of products but their customers benefit from the peace of mind that comes from sourcing their heating system from one manufacturer.

Grant’s renewable technologies all achieve impressive individual efficiencies however, when multiple technologies are combined, the overall efficiency of the complete heating system can be further improved. For example, installing an air source heat pump alongside a high performance cylinder and effective heat emitters can take a home’s heating system into a new class of efficiency. All of Grant’s products have been developed to complement one another, allowing each product to work at its best when installed alongside the other components within the system helping it to achieve maximum overall efficiency.

Alongside its comprehensive product offering, Grant also provides customer support in the form of design assistance and quotations. The dedicated Grant Renewables Support Team is on hand to assist with the design and sizing requirements for renewable and underfloor heating installations. From answering design queries and assisting with heat loss calculations through to providing full system drawings and complete product specifications, the Renewables Support Team can provide expert advice to help installers and their customers make informed decisions when choosing the right heating solutions for their requirements.

Through its design and quotation services and product supply, Grant delivers complete home heating packages and with so many different products available within its portfolio, there is a package solution to meet almost any home’s heating requirements. The diverse range of products available from Grant delivers choice and flexibility for customers, allowing them to select the technologies which best meet their heating needs. From new builds through to retrofits and renovations, Grant’s heating products are suitable for installation within a wide range of properties.

For multiple package solutions, choose Grant.

04

Introducing the Products

Aerona³ R32 Air Source Heat PumpsThe Aerona³ inverter driven air source heat pumps utilise the more environmentally friendly R32 refrigerant and have exceptional SCOPs (Seasonal Coefficients of Performance), delivering high performance while also having minimal impact on their surrounds both aesthetically and acoustically.

VortexAir HybridCleverly combining an air source heat pump with a blue flame oil-fired boiler, the VortexAir hybrid allows homeowners to enjoy the best of both worlds, introducing the benefits of renewable energy with the back-up heating provided via the traditional fuel source.

Wave High Performance CylindersThe Wave cylinder range consists of direct, indirect, single and twin coil variants which are all manufactured to the highest specification to help deliver maximum heat transfer and recovery for effective hot water heating.

Sahara Solar ThermalAvailable in on-roof, in-roof and flat roof mounting options, Grant’s Sahara solar thermal systems offer a clean, sustainable and cost effective low carbon alternative to providing homes with hot water.

Uflex Underfloor HeatingGrant’s wet underfloor heating range, which includes systems suitable for both new build and retrofit situations, effectively and evenly distributes heat into a room while also helping the heat source, such as an air source heat pump, to work at its optimal efficiency.

Afinia Aluminium Radiators The Afinia aluminium vertical and horizontal radiators have excellent thermal conductivity which makes them highly responsive and incredibly effective for both low and high temperature systems.

Solo Fan ConvectorsIntelligent in design, small in size and quiet in operation, the Solo fan convector range consists of wall mounted and plinth models which seamlessly integrate with low temperature systems achieving fast rates of convection.

05

Package Solutions by Grant

Grant’s products can be combined in different ways to suit the specific heating requirements of the property in which they are being installed. By installing an air source heat pump alongside a high performance cylinder and effective heat emitters, a home’s heating system can be taken into a new class of efficiency.

Send your plans to

[email protected]

06

Sahara solar thermal•On roof, in-roof & flat roof mounting options•Solar Keymark approved•82.6% collector efficiency

Wave high performance cylinders•Pre-plumbed, single & twin coil options•Fast recovery stainless steel coils•Sizes between 125 - 400 litres

Uflex MINI underfloor heating•Very low profile (15mm finished floor height)•Suitable for ground & first floor installation•Quick installation & drying time

Afinia aluminium radiators•Vertical and horizontal options•Highly responsive•Sleek slim-line design

Solo Hideaway fan convectors •Under cabinet plinth heater•Low energy consumption•Adjustable temperature control

Uflex underfloor heating•Quick reaction time•Ideal for new builds or extensions•Highly efficient

Aerona3 air source heat pumps•High SCOP’s sustainable at low temperatures•MCS approved•Factory fitted weather compensation control

07

Model shown: HPID6R32

Aerona3 R32Air Source Heat Pumps

The Aerona³ R32 inverter driven air source heat pumps are Grant’s greenest and most efficient heat pumps yet. Incorporating R32 refrigerant which has a significantly lower Global Warming Potential compared to traditional refrigerants, the Aerona³ R32 range models are cleaner and more eco-friendly while also being incredibly effective. With excellent SCOPs, all of the Aerona³ heat pumps achieve high performances allowing homeowners to lower their dependency on fossil fuels while also reducing their annual fuel bills.

Standing out from the crowd

Designed with the installer in mindGrant’s Aerona³ air source heat pumps incorporate a number of features, as standard, which are all designed to make the installation quicker and easier for engineers. From its integrated HE pump through to the simplified electrics, the Aerona³ has been designed to save installers time when onsite fitting the heat pump, reducing the installation time for engineers and efficiently restoring a property’s heating for homeowners.

Straightforward to installThe Aerona³ can be used with a common S-plan system which minimises the number of alterations the installing engineer needs to make to the existing pipework. The simplified electrics, consisting of a 3-core cable for the wiring centre and a 2-core flex for the controller, also make for an uncomplicated installation. Furthermore, the Aerona³ incorporates a built-in HE pump which saves time and space. By not having to add an external pump, the engineer saves time on the pipework and the electrician saves time because there is no need to wire in an external pump.

Interface Relay BoxAll of Grant's Aerona³ air source heat pumps are supplied with an Interface Relay Box which is designed to easily and conveniently provide the volt free switching required by the heat pumps. It uses the heating and hot water switched live outputs from the heating system wiring centre. The Relay Box can be installed next to the wiring centre or, alternatively, it can be located nearer to the Aerona³ heat pump but, please note, it cannot be installed externally.

User-friendly for homeownersThe Aerona³ heat pumps are compatible with a property’s existing control system for the majority of installations. This means that homeowners can continue to use their familiar controller if they prefer, thus reducing the time spent installing and handing over a new control system. This can offer greater peace of mind for the end-user who is able to manage their new Aerona³ heat pump with their original controller.

Simple to service and maintainThe Aerona³ has front access with all of its major components conveniently located at the front of the heat pump unit which makes the maintenance of the product simple and easy. As with all of Grant’s products, the Aerona³ heat pump has been developed to make life easier for both the installer and the service engineer. With its components made accessible, all of the Aerona³ models are straightforward to clean and maintain.

Anti corrosive coatingSea air can be damaging to air source heat pumps fitted in coastal areas. For this reason, Grant offer Blygold corrosion protection on the Aerona3 range to help preserve and maintain heat pumps installed in the vicinity of the sea.

MeteringIf a homeowner intends to access the RHI, one or more electricity meters will be required. These meters allow the homeowner to monitor the electricity consumed by their heat pump installation. Grant's electricity meter (part code EML/100A) is class B Measuring Instruments Directive (MID) compliant.

Most domestic ASHP installations do not require a heat meter to be fitted for the RHI payment, however for non-domestic RHI installations a class 3 MID compliant heat meter will be required. Grant offer suitable heat meters for all their heat pump range (part codes HPIDHEATMETER for HPID13R32 and HPID17R32 units or HPIDHEATMETER2 for HPID6R32 and HPID10R32 units).

10

Aerona3 R32 RangeConsisting of four single phase models – 6kW, 10kW, 13kW and 17kW – the Aerona³ R32 heat pumps provide heating and hot water for properties. Each unit operates at high efficiencies even when the external temperatures are low, making for a cost-effective renewable alternative to traditional off-gas heating methods. Furthermore, the Aerona³ heat pumps have minimal impact on their surroundings being compact in size and quiet in operation with both the 13kW and 17kW models being awarded the Quiet Mark.

ModelsHPID6R32 Aerona³ 6kW R32 Air Source Heat Pump

HPID10R32 Aerona³ 10kW R32 Air Source Heat Pump



HPID13R2 & HPID17R32

7 year

guarantee* Included as standard

•Factory fitted HE circulating pump•Flexi hoses•Isolation valves•Condensate drain elbow•Remote controller and 8m cable•Interface relay box

These components are all included within the price of the heat pump, delivering cost benefits for both the installer and their customers.

S

Single phase with outputs from 6kW up to 17kW

Global Warming Potential of 675 (70% less than R410A refrigerant)

DC inverter driven

In-built weather compensation

In-built frost protection

Suitable for use with S-Plan heating control systems

Features

*When installed by a G1 Installer. Subject to full T&C's.

11

Performance & Efficiency

Seasonal Coefficient of Performance (SCOP)The SCOP is the overall performance of the heat pump when used in a designated heating season (warm, average or cold), calculated as the reference annual heating demand divided by the annual energy consumed. For the UK, it is predominantly split into two heating seasons: warm for the south (diagonal line from north Wales to the Kent coast) and average for the rest of the UK mainland, including the Scottish islands of Orkney and Shetland.

Testing is carried out to European and British Standard BS EN 14511 establishing the seasonal space heating energy efficiency and SCOP at various ambient temperatures and system flow temperatures. For example, the Grant Aerona³ HPID6R32 model produces 6kW at a SCOP of over 4 when tested at low temperature and average climate conditions. This means, for every kilowatt (kW) of energy used to run the Aerona³, over 4kW of energy is being given to the heating system in return.

It is important to note that as the outside air gets colder, the output and therefore the SCOP of an air source heat pump falls slightly, due to the reduced amount of heat energy available from the air. Conversely, when outside air temperature gets warmer, the output and COP will increase. By using SCOP as opposed to COP, these peaks and troughs are evened out into a realistic annual coefficient.

The overriding factor of the Aerona³ heat pump is that the output will modulate down or up depending on the climate conditions and the demand on the heating system, giving you peace of mind that you are as energy efficient as you can possibly be on every day of the year.

Cleaner technology, greater efficienciesGrant’s latest air source heat pumps use R32 refrigerant which makes for a cleaner unit while also delivering improved performances. Compared to other typical heat pump refrigerants, such as R410A, R32 refrigerant has a considerably lower Global Warming Potential (GWP) value. Cleverly incorporating this cleaner refrigerant results in a more sustainable heat pump which has less impact on the environment.

In addition to having a reduced GWP figure of 675, R32 is a single-component refrigerant which means it has no temperature glide. Having just one molecule in its formation, R32’s saturated liquid and vapour temperatures are the same and, by removing the risk for the refrigerant to suffer from glide, the system can recharge and recycle with greater ease, making it more efficient. The Aerona³ R32 models are therefore not only Grant’s most environmentally friendly heat pumps but also their best performing.

12

Aerona3 R32 PacksTo make life a little easier for the installer, Grant offer installation packs which consist of all the essential components required to install an Aerona3 air source heat pump. Each pack is designed to simplify ordering while also delivering cost savings as well (10% when compared to buying the components individually)*. These installation packs are made up of eight core accessories with one pack being ‘standard’, the second including the addition of a 30ltr Volumiser and the third pack including the addition of a 50ltr Buffer.

Pack OptionsHPIDR32PACK1 Aerona³ Installation Pack 1

HPIDR32PACK2 Aerona³ Installation Pack 2

HPIDR32PACK3 Aerona³ Installation Pack 3

Pack Contents HPIDR32PACK1 HPIDR32PACK2 HPIDR32PACK3

Flexi Foot kit ü ü ü

MagOne filter ü ü ü

Domestic hot water boost kit ü ü ü

18ltr sealed system kit ü ü ü

Through wall insulation kit ü ü ü

AC isolator ü ü ü

25lt anti freeze ü ü ü

Hot water priority relay ü ü ü

30ltr insulated volumiser x ü x50ltr insulated buffer x x ü

Each pack is compatible with the entire Aerona3 range, so simply select a pack from the list below and order alongside the desired heat pump model.

*Based on RRP January 2020

1 2 3

13

VortexAir HybridThe Grant VortexAir Hybrid couples together a Grant VortexBlue condensing low NOx blue flame oil-fired boiler with an Aerona³ air source heat pump. Available in two models, the VortexAir Hybrid cleverly combines a traditional fossil fuel source with the green advantage of a heat pump, providing a renewable solution to boiler replacements.

Using just a single flow and return connection into the house, the VortexAir Hybrid incorporates a 17kW Aerona³ R32 air source heat pump with either a 15/21kW or 21/26kW ultra low NOx VortexBlue oil boiler. This unique arrangement allows the oil boiler to be installed first as a stand-alone unit, either internally or externally, replacing an older oil-fired appliance and providing immediate heat and hot water for the householder.

The heat pump is then installed externally and coupled via a simple plumbing and electrical arrangement to the oil boiler. The heat pump can be installed at the same time as the boiler or it can be fitted as part of a two-stage installation which is hugely beneficial in distress purchase situations. When a quick replacement heating solution is required, the VortexAir enables householders to rapidly restore their home heating with the boiler and then later incorporate an alternative fuel source with the heat pump element.

The Grant VortexBlue oil boiler utilised within the hybrid is renowned for its high efficiency, reliability and ultra low NOx emissions. This cleaner oil-fired boiler technology combined with the green credentials of the Aerona³ heat pump results in an innovative hybrid solution which delivers the best of both worlds. Homeowners can introduce renewable technology into their home while also having the peace of mind that comes with the back-up heating provided via the boiler.

MeteringTo be eligible for RHI payments, both electricity and heat meters will be required with any VortexAir installations. Grant's HPIDKW/HMETER electricity meter and HPIDHEATMETER heat meter kit are both MID compliant. Furthermore, both these meters are DIN rail mounted to be fitted directly into the VortexAir control panel.

ModelsHPIDAIRR32 VortexAir15-21kW Blue Flame Oil Boiler

and 17kW R32 Heat Pump Hybrid

HPIDAIR2R32 VortexAir21-26kW Blue Flame Oil Boiler

and 17kW R32 Heat Pump Hybrid

Features• Easy to install and maintain

• Boiler works as a stand-alone unit and can be

installed internally or externally

• Heat pump is always fitted externally

• Boiler can be used to provide heat before the ASHP

is fitted

• Meter ready, fully pre-plumbed and wired

• Heat pump is eligible for Renewable Heat Incentive

• Option to manually switch between hybrid and oil

• Low level balanced flue supplied as standard

• Optional plume diverter kit available (purchase

separately)

Air Source Heat Pump

5 year

guarantee*

Air Source Heat Pump

Oil Boiler


14

Maximise System Efficiency

The Grant VortexAir Hybrid has been designed to maximise overall system efficiency with the use of an advanced control system. Automatically monitoring the ambient air temperature, the unit will seamlessly switch to the most effective heating mode, whether that be heat pump, oil, or a combination of both.

There are four unique operating modes incorporated into the Grant VortexAir’s controller (detailed right). Working in this way, the heat pump is able to contribute to the heat requirement of the house for longer, thereby reducing running costs and maximising RHI payments for the metered, eligible renewable heat that is generated (where applicable).

The graph below shows an example of how the operating modes seamlessly change depending upon the ambient air temperature and assumed heat loss for the property.

MODE 2Heat Pump and Oil Boiler combined at lower flow temperatures between 40oC - 50oC

MODE 3Heat Pump and Oil Boiler combined at higher flow temperatures up to 70oC

MODE 4Oil Boiler with higher flow temperatures up to 70oC and little heat pump contribution

MODE 1Heat Pump only at lower flow temperatures between 35oC - 55oC for space heating (DHW fixed at 55oC)

Example of operating modes for a property with a 18kW assumed heat loss

Ambient Design Temp -5oCFlow Temp 45oCRadiator Design Temp 70oC

Am

bien

t tem

pera

ture

OC

20

0

5

10

15

-5

15

Accessories

To accompany both the Aerona³ and VortexAir Hybrid, Grant supply a range of heat pump accessories compatible with all of the models. These accessories are available to purchase individually and some are available as part of a heat pump pack.

Sealed system kitsSealed system kits are available to suit all Aerona³ heat pump models and they are available in three sizes: 12ltr, 18ltr and 50ltr.Part codes: HPAWSSK12 / HPAWSSK18 / HPAWSSK50

Flexi-foot kit with fixingsSupplied in a pack comprised of two 600mm feet for mounting the Aerona³, the flexi-foot kit serves as anti-vibration as well raising the heat pump off the ground. When using these with a VortexAir Hybrid when both the boiler and heat pump are sited together externally, two kits will be required totalling four feet. Part code: HPIDFOOT/KIT2

Through wall insulation kitThis kit is a heavy duty 22-28mm flexi hose specifically designed for the Aerona³.Part code: HPIDINSU/KIT

Hot Water Priority RelayThis relay gives hot water priority within the central heating system. When the hot water boost is turned on as a result of needing hot water served within the home, the Grant Water Priority Relay will close the valve to the heating system. This allows the cylinder to fill with hot water without taking hot water from the heating system, satisfying the demands for both hot water and heating simultaneously. Part code: HPWPR1

Domestic Hot Water (DHW) Boost KitGrant’s DHW boost kit automatically switches on the cylinder’s immersion element when the heat pump has raised the cylinder contents to about 45°C, taking the water up to the desired water temperature, set by the immersion thermostat. It has an additional feature of automatic bacteria protection. An integrated timer is set programmed to bring on the immersion either daily or weekly for a short period of time, allowing sanitisation of the cylinder contents. This sanitisation regime is a requirement of SAP and should be fitted with every heat pump/cylinder installation.Part code: HPDHWBK2

Volumisers & BuffersIt is a requirement for a system volumiser to be fitted with every Grant ASHP or hybrid installation. Grant's range of buffers and volumisers allow for different configurations of the flow and return to and from the heat source, helping to maintain a constant flow rate and maximise system efficiency.

HPIDBUFFER5050 litre un-insulated

volumiser(1 flow / 1 return

connection)

HPIDVOL3030 litre insulated

volumiser (1 flow / 1 return

connection)

HPIDBUFF50X50 litre insulated buffer (2 flow/ 2

return connections) with 3kW immersion

heater

16

ERP & Hot Water Packages

Under the ErP Directive, when additional heating technologies are installed alongside an air source heat pump, a ‘package label’ is required which details the overall system efficiency rating.

By combining additional technologies, such as solar thermal and controls, the overall package efficiency can be improved. Each product effectively adds an efficiency percentage to the heat pump’s seasonal space ErP rating, increasing the efficiency of the complete heating system with each product complementing one another in working operation.

For example, installing an Aerona³ R32 air source heat pump with a Grant ‘A’ rated MonoWave 200 litre cylinder and Sahara two collector Solar Thermal system would achieve a combined package efficiency of A+++.

Read more about Grant’s cylinders on page 21.

Read more about Grant’s Solar Thermal Systems on page 33.

Please note, if a heat pump is installed with a hot water cylinder only, a ‘package label’ is not required because the Directive does not classify this combination of products as a ‘package’.

Example ErP package label

17

+

+

+

+

A+++

A++

A+

A B C D E F G

811/2013

A+++

X

X

A+++

HPID10R32 PackageGrant Engineering

2019

Aerona3 R32 Range Technical Specifications

HPID10R32

HPID13R32 & HPID17R32

HPID6R32

* Low temperature: 35oC flow (heating). From September 2019

HPID6R32 HPID10R32 HPID13R32 HPID17R32

ErP Rating* Heating A+++ A+++ A+++ A+++

Height (mm) 675 882 1418 1418

Width (mm) 898 874 1024 1024

Depth (mm) 379.4 405 403 403

Weight (kg) Empty 51 70 99 118

Full 52.8 71.8 101 120

Heating capacity (kW) (BS EN 14511 - air 7oC/ Water 35oC) 6.92 11.1 13.6 18.0

Power input (kW) (BS EN 14511 - air 7oC/ Water 35oC) 1.41 2.10 2.59 3.76

COP (BS EN 14511 - air 7oC/ Water 35oC) 4.91 5.28 5.25 4.79

SCOP average climate conditions (BS EN 14511 - air 7oC/ Water 35o) 4.62 5.22 5.41 4.54

Refrigerant (R32) (kg) 0.80 1.55 2.20 2.80

Power supply ~230V 1ph 50Hz

Water connections (BSPF) 3/4" 1" 1 1/4” 1 1/4"

Min/ Max operating temperatures Air (oC) -20/43 -20/43 -20/43 -20/43

Sound power level dB(A) (BS EN ISO 3743-1:2010) 65.2 64 60.8 61.6

Sound pressure level at 1m - external (dB(A)) (Q=1) 54.2 53 49.8 50.6

Electrical Installation Requirements

Max running current (A) 11.2 17.5 23.0 25.3

MCB Rating (A) 16 20 32 32

Type C C C C

Circulating waterreturn port

Circulating wateroutgoing port

57 43

327

122.5 122.5580

825 73

675

37.4 300 42

R3/4 (20A)

388

54


Circulating wateroutgoing port

75 7035

7

155155 540850 24 37 330 38

882

173

480

R1(25A)

R1(25A)

R1 1/4(32A)

R1 1/4(32A)

80 80

357


Circulating wateroutgoing port 1000 24 37 330 36

1418

680

185

205 205590

18

VortexAir Hybrid Technical Specifications

HPIDAIRR32 HPIDAIR2R32

ErP Rating* Heat Pump Heating A+++ A+++

Boiler Heating A A

Height (mm)

Width (mm)

Depth (mm)

Weight (kg) Heat Pump Empty 118 118

Boiler Empty 149 151

Combined Empty 267 269

Boiler output (kW) 15-21 21-26

Heat pump capacity (kW) (BS EN 14511 - air 7oC/ Water 35oC) 18.0 18.0

Heat pump power input (kW) (BS EN 14511 - air 7oC/ Water 35oC) 3.76 3.76

Heat pump COP (BS EN 14511 - air 7oC/ Water 35oC) 4.79 4.79

Heat pump SCOP average climate conditions (BS EN 14511 - air 7oC/ Water 35o) 4.54 4.54

Heat pump Refrigerant (R32) (kg) 2.80 2.80

Heat pump power supply ~230V 1ph 50Hz

Heat pump water connections (BSPF) 1 1/4" 1 1/4"

Heat pump min/ max operating temperatures Air (oC) -20/43 -20/43

Heat pump sound power level dB(A) (BS EN ISO 3743-1:2010) 61.6 61.6

Heat pump sound pressure level at 1m - external (dB(A)) (Q=1) 50.6 50.6

Electrical Installation Requirements

Heat pump max running current (A) 25.3 25.3

MCB Rating (A) 32 32

Type C C* Low temperature: 35oC flow (heating). From September 2019

62

72

112

238

275

4986

13

65

1420

�� DATE: ��XXXXXXXXXXX ��

560

280

1270

257690100

1420

1000

2047

�� DATE: ��XXXXXXXXXXX ��

76486

5

1266

190

185

119

69

124

160

80

525

471

385

330

213

500

19

Wave High PerformanceCylinders & Thermal Stores

The Wave cylinder and thermal store range comprises of high efficiency direct and indirect hot water solutions which can partner with all of Grant’s heat source appliances. Each model within the range can complement conventional and renewable technologies so whatever the combination required, Grant’s cylinders and stores offer an eco-friendly, reliable and energy efficient solution to a home’s hot water needs. The entire Wave range is WRAS approved and includes forty different model variants, providing customers with greater choice and flexibility when it comes to installation.

Introduction to Wave Range

High quality specificationAll of Grant’s cylinders and stores are designed to deliver maximum heat transfer and recovery while also being produced to the highest standards. They are manufactured using high quality duplex 2034 stainless steel with internal coils made from either 20mm or 25mm corrugated stainless tubing. The finished products are then insulated with 40mm of CFC/HCFC free polyurethane foam to ensure low standing heat losses and outstanding efficiency and reliability.

Manufacturing to StandardsThe Wave models are built to a high specification ensuring that each product delivers excellent performance whilst also complying with industry standards. Grant cylinders are manufactured in accordance with BS EN 12897 and adhere to Building Regulations G3 and Water Regulations. Their performance levels also comply with the requirements BSEN806, BS1566 and BS7206 as well as meeting the NHBC criteria for new builds.

During the manufacturing process every unit is pressure tested to a full 12 bar. All products within the range are covered by the Benchmark which is the code of practice for the installation and commissioning of central heating systems. Furthermore, all of Grant’s cylinders are WRAS approved meaning that they comply with the high standards set out by water regulations in the UK.

Choice across the rangeFrom oil and gas boilers to electric heating, air source heat pumps and solar thermal, Grant has a hot water storage solution which can seamlessly combine with most household hot water systems. The broad range of cylinders range in size from 125 litres up to 400 litres with the thermal stores available in sizes between 250 litres and 500 litres. Amongst the selection of models, there are unvented and open-vented options, direct and indirect variants, as well as single and twin coil models too. The Wave cylinder and thermal store range from Grant provides installers with different solutions to meet the installation needs of their customers.

Features•25 year material guarantee on cylinder/store shell*

•22mm and 28mm compression fittings

•No anode required

•Factory fitted immersion heater(s)

•Fast recovery stainless corrugated coils (all direct and

indirect models)

•Labelled and colour-coded tappings

•Global Warming Potential (GWP) – less than 3

•Ozone Depletion Potential (ODP) – 0

*subject to full T&C's

22

High Performance Cylinder RangeThe High Performance unvented, indirect mains pressure cylinders are available in single coil variants or with a twin coil option for combining two heat sources. These cylinders are ideally suited for the Aerona³ air source heat pumps as they each incorporate a larger primary coil for quicker heat transfer. The range includes a highly efficient ‘A’ rated MonoWave model as well as cylinders which have an integral 50 litre buffer. Furthermore, each cylinder features compression fittings which are conveniently located. Pre-plumbed models are also available within the range, both of which make for a quicker and easier installation.

Models - Nominal VolumesIndirect| Unvented | Single Coil

HPMONO/IND125 125 litres



HPMONOA/IND200 200 litres



Indirect| Unvented | Single Coil | Integral 50L Buffer

HPFR200C/BS 200 litres



Indirect| Unvented | Single Coil | Integral 50L Buffer |Pre-Plumbed

HPFR200PPC/BS 200 litres



Indirect| Unvented | Solar Twin Coil

HPDUO/IND170 170 litres





Accessories

HPIDBUFF50X 50 litre insulated buffer (2x flow/ 2x return connections) c/w 3kW immersion heater

HPIDVOL30 30 litre volumiser (1x flow/ 1x return connections)

HPDHWBK2 Automatic domestic hot water boos kit (Timed)

ComponentsHPMONO/

INDHPFR HPDUO/

IND

Expansion vessel & hose

ü ü* ü

15/22mm tundish ü ü ü

Inlet manifold assembly

ü ü ü

Dual thermostat ü ü X 2 ü X 2

2 port zone valve ü ü ü

25year

guarantee*



*no expansion vessel hose

23

DuoWave SolarCylinder RangeIdeal for systems which combine a solar thermal system, with an oil, gas or electric boiler, the DuoWave mains pressure cylinder range features singe, twin and triple coil models. With their highly efficient corrugated heating coils, the DuoWave cylinders have been designed to ensure a maximum transfer of the energy collected by the solar thermal system. Consequently, when correctly installed, these cylinders can significantly reduce a household’s dependence on traditional fossil fuels resulting in lower energy bills.

Models - Nominal VolumesDirect| Unvented | Single Solar Coil

GDUO/DIR170 170 litres





Indirect| Unvented | Solar Twin Coil

GDUO/IND170 170 litres





Indirect| Open Vented | Triple Coil

GDUO/PLUS300 300 litres

Indirect| Unvented | Triple Coil

GDUO/PLUS300 U 300 litres

ComponentsGDUO/

DIRGDUO/

INDGDUO/

PLUSGDUO/PLUSU

Expansion vessel & hose

ü ü ü

15/22mm tundish

ü ü ü ü

Inlet manifold assembly

ü ü ü

Dual thermostat

ü ü ü ü

2x port zone valve

ü X 2 ü X 2

Behind the designDirect models are designed to be electrically heated but also incorporate a high performance solar coil to allow easy connection to a solar thermal system. Indirect cylinders have two coils for connection to primary heat sources. The solar heat supply should be connected to the bottom coil, which is designed to preheat or heat the surrounding water, depending on the temperature of the incoming supply. The central heating boiler connections should then be made to the top coil. The boiler will only operate if the water in the cylinder has not reached the desired pre-set temperature and the boiler/cylinder controls are installed and commissioned correctly.

DuoWave Plus Available as open-vented or unvented 300 litre models, the DuoWave Plus cylinders are designed to combine different heating technologies within a single system by utilising up to three separate high performance heating coils and a 3kW immersion heater. When installed as an open vented cylinder, it is possible to use the DuoWave Plus to combine a solid fuel or wood burning appliance with an oil or gas boiler. An additional heat source, such as solar thermal, can also be linked using the high performance coil located at the bottom of the cylinder.

25year

guarantee*

*Subject to full T&C's

24

ThermaWaveThermal Store RangeDesigned for situations where there is a greater demand for domestic hot water, the ThermaWave thermal stores are available as open-vented or sealed systems variations which can combine multiple heat sources in a variety of configurations. Each store allows several heat sources to be connected in a number of different ways with immersion heater back-up. Using a Grant ThermaWave store, households can incorporate more than one renewable technology with traditional heating systems, helping them to save energy and lower home heating costs.

Models - Nominal VolumesOpen Vented

GTHERM/250 250 litres



Open Vented | Domestic Hot Water Coil

GTHERM300HW 300 litres


Unvented| Domestic Hot Water Coil



Combining technologiesMany people are opting for renewable technologies to heat their homes, reducing their carbon footprints and lowering their fuel bills. Thermal stores make it possible for a gas or oil-fired boiler to be connected to a solid fuel appliance as well as a renewable heat source, such as solar thermal or a heat pump. In addition, the manifolds of an underfloor heating system and the radiator circuits can also be directly connected to the store.

The range in detailThe Grant ThermaWave is available in three variations including open-vented with solar coil, open-vented with solar and DHW coils, and sealed system with solar and DHW coils. The addition of the DHW coil removes the need to link the store to an additional cylinder, resulting in a more cost effective and compact installation.

Each store has been designed in such a way that it slows inlet water velocities, ensuring multi-level temperature distribution. Using high specification duplex stainless steel, all forms of corrosion are resisted to ensuring the product’s longevity. Furthermore, compression fittings on most connections dramatically reduce fitting time for the installer and the 40mm injected polyurethane foam insulation gives an exceptionally low standing heat loss, making the units highly efficient.

ComponentsOpen Vented Unvented

Expansion vessel & hose ü ü

1 litre shock arrestor ü ü

22mm thermostatic mixing valve ü ü

22 x 22 mm 1/2" BSPF fitting ü ü

3 bar/ 6 bar inlet group ü ü

Reducer fitting (400 litre models only) ü

22 x 22 mm 3/4" BSPF fitting ü

1/2" BSPM to 15mm fitting (90o) ü

Filling loop kit ü

PRV & pressure gauge ü

80oC limit stat ü

Electrical control box ü25year

guarantee*


25

High Performance Range Technical Specifications

Indirect | Unvented | Single Coil

Model ActualCapacity

(ltrs)

ErP Rating

Pressureregulator

(bar)

Immersion fitted(kW)

Expansionvessel (ltrs)

Coil rating primary

(kW)

Standing heat loss

(kW/24hrs)

Casing Height(mm)

TotalHeight^

(mm)

Diameter(mm)

Weightempty(kg)

Weight full(kg)

HPMONO/IND125 118 C 3 3 12 24.0 0.99 795 835 580 30 155

HPMONO/IND150 136 C 3 3 12 27.8 1.12 890 940 580 32 182

HPMONO/IND170 165 C 3 3 19 27.8 1.44 1035 1085 580 45 215

HPMONOA/IND200 202 A 3 3 19 47.0 1.04 1890 1930 580 70 270

HPMONO/IND200 188 B 3 3 19 47.0 1.44 1170 1215 580 49 249

HPMONO/IND250 222 C 3 3 24 47.0 1.64 1360 1410 580 59 309

HPMONO/IND300 274 C 3 3* 24 56.6 1.91 1650 1700 580 68 368

HPMONO/IND400 356 C 3 3* 35 56.6 2.39 2050 2110 580 76 476

Indirect | Unvented | Single Coil | Integral 50lt Buffer


(ltrs)

ErP Rating

Pressureregulator

(bar)



Coil rating primary

(kW)

Standing heat loss

(kW/24hrs)

Casing Height(mm)

TotalHeight^

(mm)

Diameter(mm)

Weightempty(kg)

Weight full(kg)

HPFR200C/BS 194 C 3 3** 19 46 1.88 1720 1760 580 60 302***

HPFR250C/BS 242 C 3 3** 24 46 2.02 1890 1930 580 67 357***

HPFR300C/BS 292 C 3 3** 24 64 2.21 2109 2149 580 74 414***

Indirect | Unvented | Single Coil | Integral 50lt buffer | Pre-Plumbed


(ltrs)

ErP Rating

Pressureregulator

(bar)



Coil rating primary

(kW)

Standing heat loss

(kW/24hrs)

Casing Height(mm)

TotalHeight^

(mm)

Diameter(mm)

Weightempty(kg)

Weight full(kg)

HPFR200PPC/BS 194 C 3 3** 19 46 1.88 1720 1760 580 60 302***

HPFR250PPC/BS 242 C 3 3** 24 46 2.02 1890 1930 580 67 357***

HPFR300PPC/BS 292 C 3 3** 24 64 2.21 2109 2149 580 74 414***

Indirect | Unvented |Solar Twin Coil


(ltrs)

ErP Rating

Pressureregulator

(bar)



Coil rating primary

(kW)

Solar(kW)

Standing heat loss

(kW/24hrs)

Casing Height(mm)

TotalHeight^

(mm)

Diameter(mm)

Weightempty(kg)

HPDUO/IND170 163 C 3 3 19 32 8.5 1.42 1035 1080 580 57

HPDUO/IND200 183 B 3 3 19 47 10 1.44 1155 1195 580 61

HPDUO/IND250 216 C 3 3 24 47 16 1.57 1430 1480 580 71

HPDUO/IND300 269 C 3 3 24 55.6 16 1.88 1640 1680 580 80

HPDUO/IND400 350 C 3 3 35 55.6 23 2.36 2050 2105 580 100

Grant Cylinder Accessories

Model Description Height(mm)

Diameter(mm)

Weightempty(kg)

Weight full(kg)

Actual capacity

(ltrs)

Connections (BSP)

HPIDBUFF50XGrant 50 litre insulated buffer (2 x flow / 2x return connections) c/w 3kW immersion heater

410 475 10 58 48 1”

HPIDVOL30Grant 30 litre volumiser (1x flow/ 1x return connection)

360 475 8 41.5 33.5 1”

HPDHWBK2 Grant Automatic domestic hot water boost kit (Timed)

^ Includes HW outlet connection * 2 x 3kW immersion heaters** 2x 3kW immersion heaters (one in buffer) *** Includes buffer. Does not include pre-plumbed pipework.

26

High Performance Range Technical Specifications

A

J

KH

G

F

E

DCB

I

I

G

B

H F

E D

C

AA

B

C

DE

F

F

G H

F

I J

A

B

C

DE

F

Indirect | Unvented | Single Coil Indirect | Unvented | Single Coil | Integral 50lt Buffer

Indirect | Unvented | Single Coil | Integral 50lt buffer | Pre-Plumbed Indirect | Unvented |Solar Twin Coil

A Hot out

B T+P valve

C Secondary return

D Heat pump flow

E Heat pump return

F Thermostat pocket

G Immersion heater

H Cold in

I Immersion heater300 & 400 ltr models only

A Flow to heating zone 1

B Flow to heating zone 2

C Flow from ASHP

D Return from ASHP

E Return from heating circuits

F Flow to DHW

A Hot out

B T+P valve

C Secondary return

D Primary flow

E Primary return

F Thermostat pocket

G Immersion heater

H Cold in

I Flow & return from ASHP

J Flow & return to cylinder coil & heating circuits

A Hot out

B T+P valve

C Heat pump return

D Heat pump flow

E Secondary return

F Thermostat pocket - ASHP

G Immersion heater

H Thermostat pocket

I Solar flow

J Cold in

K Solar return

27

DuoWave Solar Range Technical Specifications

Unvented | Direct | Solar Single Coil

ModelActual

Capacity (ltrs)

ErP Rating

Pressureregulator

(bar)



Coil rating solar(kW)

Standing heat loss

(kW/24hrs)

Casing Height(mm)

TotalHeight^

(mm)Diameter

(mm)

Weightempty(kg)

Weight full(kg)

GDUO/DIR170 171 B 3 3 19 8.5 1.40 1030 1080 580 37 207

GDUO/DIR200 196 C 3 3 19 10.0 1.53 1150 1200 580 41 241

GDUO/DIR250 230 C 3 3 24 16.0 1.71 1360 1400 580 47 297

GDUO/DIR300 288 C 3 3 24 16.0 2.09 1650 1690 580 53 353

GDUO/DIR400 369 C 3 3 35 24.0 2.49 2060 2100 580 65 465

Unvented | Indirect | Solar Twin Coil

ModelActual

Capacity (ltrs)

ErP Rating

Pressureregulator

(bar)



Coil rating primary

(kW)

Solar(kW)

Standing heat loss

(kW/24hrs)

Casing Height(mm)

TotalHeight^

(mm)Diameter

(mm)

Weightempty(kg)

Weight full(kg)

GDUO/IND170 171 B 3 3 19 8.5 8.5 1.40 1040 1080 580 49 219

GDUO/IND200 192 C 3 3 19 8.5 10.0 1.47 1160 1200 580 53 253

GDUO/IND250 230 C 3 3 24 8.5 13.9 1.64 1360 1400 580 63 313

GDUO/IND300 288 C 3 3 24 8.5 16.0 2.00 1650 1690 580 72 372

GDUO/IND400 366 C 3 3 35 10.0 24.0 2.46 2060 2100 580 92 492

Open Vented | Indirect | Solar Triple Coil

ModelActual

Capacity (ltrs)

ErP Rating

Coil rating primary 1

(kW)


(kW)

Solar(kW)

Standing heat loss

(kW/ 24hrs)

Casing Height(mm)

TotalHeight^

(mm)Diameter

(mm)

Weightempty(kg)

Weight full(kg)

GDUO/PLUS300 282 C 11.6 8.5 16 2.21 1650 1720 580 57 357

Unvented | Indirect | Solar Triple Coil

ModelActual

Capacity (ltrs)

ErP Rating

Pressureregulator

(bar)

Expansion vessel(ltrs)


(kW)


(kW)

Solar(kW)

Standing heat loss

(kW/ 24hrs)

Casing Height(mm)

TotalHeight^

(mm)Diameter

(mm)

Weightempty(kg)

Weight full(kg)

GDUO/PLUS300U 282 C 3 24 11.6 8.5 16 2.21 1650 1720 580 57 357

ImportantIf the DuoWave Plus is to be connected to a non-thermostatically controlled appliance (e.g. solid fuel back boiler), the cylinder must be installed in an open-vented system to comply with current Building Regulations.

Note: In an open-vented system, the T+P valve would not operate in pressure mode, but may still be operated on temperature, so it should be connected in the correct manner (see installation manual).

^ Includes HW outlet connection

28

Open Vented | Indirect | Solar Triple Coil

ModelActual

Capacity (ltrs)

ErP Rating


(kW)


(kW)

Solar(kW)

Standing heat loss

(kW/ 24hrs)

Casing Height(mm)

TotalHeight^

(mm)Diameter

(mm)

Weightempty(kg)

Weight full(kg)

GDUO/PLUS300 282 C 11.6 8.5 16 2.21 1650 1720 580 57 357

A

C

F

B

D

K

G

H

J

E

I

DuoWave Solar Range Technical Specifications

Unvented | Direct | Solar Single Coil Unvented | Indirect | Solar Twin Coil

A

I

D

B

C

F

E

HG

A Hot out

B T+P valve

C Secondary return

D Solar return

E Immersion heater

F Thermostat pocket - solar

G Cold mains in

H Solar flow

I Immersion heater

A Hot out

B T+P valve

C Primary flow

D Secondary return

E Thermostat pocket - boiler

F Primary return

G Solar return

H Thermostat pocket - solar

I Cold mains in

J Solar flow

K Immersion heater

A

B

G

J

E

I

H

K

DC

F

L

M

A Hot out

B T+P valve

C Secondary return

D Primary return

E Solid fuel flow

F Thermostat pocket - boiler

G Solid fuel return

H Primary flow

I Solar return

J Solar flow

K Thermostat pocket - solar

L Cold mains in

M Immersion heater

Open Vented & Unvented | Indirect | Solar Triple Coil

29

ThermaWave Range Technical Specifications

Grant ThermaWave DHW stores performance dataCapacity Draw off 1*

(20l/min at 70OC) Reheat time(mins)

Draw off 2* (20l/min at 70OC)

Reheat time(mins)

Draw off 3* (20l/min at 70OC)

Reheat time(mins)

300 115 11 230 20 400 28

400 145 12 285 22 420 32

*Note: Draw off provides a final mixed water temperature (e.g. for a bath) of 45oC. Draw off 1 is the top third of the store. Draw off 2 is the top 2/3 of the store. Draw off 3 is the full store (without solar thermal input). Reheat times relate to raising the same volume of water back to 70oC.

Open-Vented

ModelActual

Capacity (ltrs)

ErP Rating


Coil ratingsolar(kW)

Standing heat loss

(kW/24 hrs)

Casing Height(mm)

TotalHeight^

(mm)Diameter

(mm)

Weightempty(kg)

Weight full(kg)

GTHERM/250 234 C 3 16 1.70 1360 1400 580 55 305

GTHERM/300 289 C 3 16 2.06 1650 1690 580 61 361

GTHERM/400 373 C 3 24 2.52 2060 2100 580 74 474

Open-Vented |Domestic Hot Water Coil

ModelActual

Capacity (ltrs)

ErP Rating



Coil ratingDHW(kW)

Standing heat loss

(kW/24 hrs)

Casing Height(mm)

TotalHeight^

(mm)Diameter

(mm)

Weightempty(kg)

Weight full(kg)

GTHERM300HW 273 C 3 16 46.4 1.97 1650 1690 555 65 365

GTHERM400HW 369 C 3 27.6 55.2 2.49 1590 1640 660 80 480

Unvented |Domestic Hot Water Coil

ModelActual

Capacity (ltrs)

ErP Rating



Coil ratingDHW(kW)

Standing heat loss

(kW/24 hrs)

Casing Height(mm)

TotalHeight^

(mm)Diameter

(mm)

Weightempty(kg)

Weight full(kg)

GTHERM300HWU 273 C 3 16 46.4 1.97 1650 1690 555 65 365

GTHERM400HWU 369 C 3 27.6 55.2 2.49 1590 1640 660 80 480

^ Includes HW outlet connection

30

ThermaWave Range Technical Specifications

A

BC D

EF G

H

JI

K L

M N

O

P

V

S

Q

TR

U

XW

A

I

O

Q

J

T U

C B D

E

H

S R

P

N

K

M

L

GF

A Output seven (e.g to DHW kit or flow to DHW cylinder + OSV)

B T&P valve (1/2" BSPF for 250 ltr & 300 ltr and 3/4" for 400 ltr models)

C Input one (e.g flow from boiler if DHW is fitted)

D Output one (e.g CH flow if no DHW is fitted)

E Thermostat pocket

F Input two (e.g flow from boiler if no DHW is fitted)

G Output two (e.g CH flow if DHW is fitted)

H 28mm gravity flow (e.g solid fuel)

I Input three 9e.g return from DHW kit or cylinder)

J Output three (e.g to UFH if high capacity)

K Immersion heater

L Thermostat pocket

M Input four (e.g flow from heat pump)

N Output four (e.g return to boiler)

O 28mm gravity return (e.g solid fuel)

P Input five (e.g return from CH)

Q Output five (e.g UFH flow if low capacity)

R Solar return coil

S Immersion heater

T Thermostat pocket

U Solar coil flow

V Input six (e.g return from UFH)

W Output six (e.g return to heat pump)

X 22mm fill and drain point

Open-Vented & Unvented|Domestic Hot Water Coil

A Output seven (e.g to DHW kit or flow to DHW cylinder + OSV)

B T&P valve (1/2" BSPF for 250 ltr & 300 ltr and 3/4" for 400 ltr models)

C Input one (e.g flow from boiler if DHW is fitted)

D Output one (e.g CH flow if no DHW is fitted)

E Thermostat pocket

F Input two (e.g flow from boiler if no DHW is fitted)

G Output two (e.g CH flow if DHW is fitted)

H Output two alternative position (e.g if less DHW is required)

I Immersion heater

J Thermostat pocket

K Input four (e.g flow from heat pump)

L Output four (e.g return to boiler)

M Input five (e.g return from CH)

N Output five (e.g UFH flow if low capacity)

O Solar coil return

P Thermostat pocket

Q Solar coil flow

R Output six (e.g return to heat pump)

S 22mm fill and drain point

T Cold mains

U DHW out

Open-Vented

31

Grant Solar Range

Solar Thermal Systems from Grant allow householders to utilise the power of the sun to provide hot water to their home. An environmentally responsible alternative to traditional energy sources and fossil fuels, solar thermal technology has zero CO2 emissions and efficiently uses the energy from the sun within a central heating system. Grant Solar Thermal systems are compatible with different types of roof and easily incorporate into an existing or new heating system so accessing the benefits of the inexhaustible supply of sunshine is made simple and easy.

800

900

1000

11001200

Introduction to Solar Thermal

Energy is produced from the sun throughout the year, even on cloudy days, so finding ways to transfer this energy into the home is becoming increasingly popular. Solar thermal technology can produce the energy required to heat a home’s hot water almost all year round while also being an excellent way for homeowners to reduce their carbon footprint. Once installed, solar thermal is a cost effective and sustainable addition to any home’s heating system.

The basic principles Solar thermal collectors efficiently extract the energy from the sun and transfer it into a heating’s hot water system. Roof-mounted solar collectors are connected to a system which contains a special glycol/water solution. While passing through the collector, this fluid is heated up and then circulated from the panel through to a cylinder where the heat is transferred to produce hot water.

Free energySolar collectors do not only work in the summer, contrary to what some people may believe. The sun’s free energy is available throughout the year so solar collectors also work all year round too. Collectors, such as those supplied by Grant, operate in both direct sunlight and in diffused sunlight so, even on cloudy days, they are working. During the months of May through to September in particular, solar thermal can produce 100% of the energy required to meet a home’s domestic water needs.

In the UK and Ireland, the amount of available solar radiation varies. The diagram here shows the total average solar radiation falling on 1m² surface, inclined at 30° to the horizontal, measured in kilowatt hours. The average property requires approximately 3,000kWh per year for domestic water heating so, as the diagram demonstrates, solar energy can provide a significant proportion of this.

Fit for the futureInstalling solar thermal technology is beneficial in a number of ways. Not only is it a clean, sustainable method of providing homes with their hot water, a solar thermal system can also save householders up to 70% on their annual hot water heating costs. Furthermore, adding solar heating technology to a property can increase its value. Houses with solar heating are less prone to fluctuations in heating prices, making them an attractive option for potential buyers.

Sunny1,000 W/m2

Cloudy600 W/m2

Hazy300 W/m2

Overcast100 W/m2

34

Grant Solar Thermal Technology

The Grant Solar Thermal range includes the high efficiency Sahara flat plate collector, multifunctional controller with LCD display, and various roof mounting options. In addition, the range also includes the unique Grant CombiSOL which allows solar thermal to integrate with combination boilers as well as the Grant WinterSOL which provides a fully heated cylinder of hot water during periods of low thermal gain.

Sahara collector overviewThe Grant Sahara collector has a durable extruded aluminium frame with a bronze anodised finish which has been designed to blend in with most domestic roof types. During the manufacturing process, premium materials are used to guarantee the functionality and longevity of the collectors. In addition, Grant’s collectors are all tested to the requirements of BS EN 12975.

The Sahara collector has been designed to deliver maximum heat transfer. Grant use a unique patented system where the heat transfer sheet within the collector interlocks both the pipe and absorber for perfect thermal transfer. Additional aluminium plates enclose the copper pipes and this, combined with an industrial strength adhesive, result in 360° heat transfer from the absorber plate to the pipe carrying the solar fluid. Alternative systems which use a soldered absorber or an ultrasonic welded absorber provide far less contact between the pipe and heat transfer plate, making these options less efficient and more prone to water damage.

Roof mounting optionsAlmost any roof type is suitable for solar thermal but, when choosing an appropriate system, there a couple of factors worth considering. Positioning the collectors in a south facing arrangement could gain 100% of available solar energy during a day whereas a south-east or south-west facing roof will have a reduction in yield of 5-10%. Grant’s Solar Thermal systems are designed to suit both sloping and flat roofs with on-roof, in-roof and flat roof mounting arrangements available.

On-RoofUsing the on-roof mounting system, the Sahara collectors are quickly and easily located above the roof tiles or slates using brackets and a mounting rail attached directly to the roof trusses. This system is available with fixing brackets suitable for all roof tile types and on roof pitch ranges from 20° to 60°.

In-RoofWith the in-roof mounting arrangement, the collectors are set into the roof tiles or slates ensuring a low-profile appearance. The roof surface beneath is closed within an aluminium weathering cassette incorporating flashings and drainage channels. In new build applications, this mounting option offers an additional benefit of reducing roofing costs because tiles are not required beneath the installation.

Flat RoofThe third mounting option from Grant is the flat-roof system. This system is based upon the on-roof design with the mounting rails fitted to a rigid inclined frame structure. This method allows the collectors to be positioned quickly and easily on a flat roof or other flat surface.

35

Sahara SolarRangeGrant supply their Solar Thermal Systems as a series of individually numbered kits that meet the requirements of most installations. Each kit consists of the Sahara collector(s) (either portrait or landscape), a roof mounting system, expansion vessel, pump station, controller, pipe connections and solar fluid.

KitsOn-Roof | Portrait

GSSKIT0 1 collector kit



On-Roof | Landscape

GSSKIT1LAND 2 collector kit

In-Roof| Portrait | Tile




In-Roof| Portrait | Slate




In-Roof| Landscape | Tile


GSSKIT3 LAND 2 collector kit

GSS3ILT1 3 collector kit

In-Roof| Landscape | Slate


Flat Roof| Portrait


10year

guarantee*

Features

BenefitsThe Sahara solar collectors from Grant, which are Solar Keymark approved, are very effective and incredibly durable. Homeowners who choose to install Grant Solar can hope to save on their annual energy bills because the system can provide up to 70% of a household’s hot water needs. Furthermore, all of Grant’s solar products and components are rigorously tested to ensure the highest standards of quality and reliability are met for years to come.

82.6% collector efficiency

Significantly lower CO₂ emissions

Dramatically reduced annual fuel bills

Minimum maintenance

Eligible for RHI payments £


36

Boiler primaryflow and return

Solar flowand return

Solar collector temperature sensor

Air eliminatorwith manualbleed screw

Power to pump from Controller

HE Pump

Solar cylinder temperature sensor

Expansionvessel

Flow meter

Filling flushingvalves returnball valve

Power to controller

Return ball valve

Pressure relief valve 6 bar

Solar Thermal Sytem Design

Grant Solar Thermal can easily integrate with conventional water heating systems with installation typically taking a couple of days to complete. The diagram here shows the pump station incorporated which features an air eliminator that allows the system to be both filled and purged of air in a single operation. Unlike other arrangements, there is no need to install an air vent on the roof and also no need for frequent maintenance.

Designing a systemGrant Solar collectors have an absorber (or nett) area of 2.14m² and, as a rule of thumb, you should allow 1.0-1.3m² of nett collector area per person. For the cylinder, they require 50-60 litres capacity per m² of nett collector area. To simplify this, for a two collector system (2 x 2.14m²) you will require a cylinder of approximately 200-250 litres which would be sufficient for four people and would satisfy up to 70% of the hot water demand per annum.

When designing a solar thermal system, there are several factors that need to be considered including:• Location & orientation of building• Angle of inclination (roof)• Shading of collectors• Collector array in m²• Hot water requirements• Size of cylinder• Pipe work requirements

Flow ball valve

How to calculate the number of collectors required Direction of roof

Solar radiation kWh/Year

(see map on page 34)

Number of people per household

Components

Solar controllersThe Grant GSX1 and GSD3X differential temperature solar controllers automatically manage the operation of the solar thermal system. Monitoring the temperature in both collector and cylinder, they operate the circulating pump only when the difference in temperature will provide efficient heating of the hot water. They will also stop the circulating pump if the temperature in the collector exceeds the maximum set or, if the cylinder has reached the required temperature.

The GSX1 controller is used for simple systems, where collectors are located on the same side of a roof - such as with a south facing installation - whereas the GSD3X is utilised for more complex projects where collectors are facing the different directions, located on either the side of a roof - such as with an East/West facing installation.

Both solar controllers monitor and display the amount of solar power produced by the system on a daily and cumulative basis. The controllers can display the collector and cylinder temperatures and also incorporate a pump kick facility which activates the pump for a short period each day to prevent the possibility of seizure if not operated for more than 24 hours.

Expansion vesselAvailable in 18 and 25 litres, the expansion vessel connects to the solar pump station by a flexible hose. It incorporates a special membrane selected to withstand the higher temperatures found in solar thermal systems.

Solar pump stationThe Grant Solar pump station has been designed to be compact. The unit has a black insulating cover, housing the high efficiency circulating pump, along with all other control components and is designed for vertical wall mounting.

The flow and return ball valves incorporate temperature gauges to monitor the return and flow temperatures and have integral antigravity brakes to prevent gravity circulation around the circuit when the pump is stopped. The air separator has a manual bleed screw and allows for rapid air removal from the sealed system. The 6 bar pressure relief valve is mounted on a manifold with the system pressure gauge and expansion vessel connection.

Filling and flushing of the system is made easy by the combined fill and flush valve assembly and the adjustment of fluid flow rate is simple using the integral flow indicator.

Solar fluidThe solar fluid is an odour-free, non-toxic 40/60 propylene glycol/water solution, developed specifically for solar thermal applications to protect systems from freezing. The nitrate, phosphate and ammonia free fluid has been formulated to remain stable over long periods of time and is also a good corrosion inhibitor. It is available ready mixed in 10 or 20 litre packs.

38

CombiSOL & WinterSOL

Grant CombiSOLSolar thermal systems are increasing in popularity in the UK and many new and existing heating installations involve mains pressure combination boilers. A simple, cost effective solution to integrate these two technologies is therefore needed and this is precisely what the Grant CombiSOL does. It is uniquely compatible with most combi boilers and fuel types, cleverly combining the two energy sources.

The Grant CombiSOL works by accurately controlling the outlet temperature of stored secondary hot water produced by the solar thermal system. If the stored water is hot enough it directs the flow straight to the hot water outlet without passing through the combi boiler but if the water is colder it directs it via the combi boiler to the same outlet with a seamless changeover. There are additional minimal temperature fluctuations at the taps and Grant has refined the use of each valve (marked clearly on the white cap) to give optimum control of hot water delivery to the taps.

The unit also accurately regulates the inlet water temperature to the combination boiler, therefore installing the Grant CombiSOL with any combi boiler should not pose a problem, as the mixed water into the appliance is limited to a maximum of 24°C.

Technical InformationThe unique thermostatic change-over valves provide a safe and simple solution for adding renewable energies to the home without having the added expense of changing the central heating appliance. However, it is important to ensure that the combination boiler can accept an incoming cold mains water temperature of up to 24°C and Grant recommends that the boiler manufacturer is contacted to verify this.

Grant WinterSOLWhen there are times of low solar gain, the Grant WinterSOL provides a fully heated cylinder to ensure that the household’s hot water demand is satisfied. During the winter months, there may not be sufficient solar (or heat pump) gain so the Grant WinterSOL has been designed to provide back-up for heating the water within the cylinder.

For example, 150 litres of hot water from a 300 litre cylinder may be insufficient. By fitting the Grant WinterSOL, a simple summer/winter switch can be operated by the homeowner, allowing the central heating boiler to heat the full contents of the cylinder. When solar gain is restored, the switch is set back to summer mode for maximum efficiency. This unit does not directly prevent solar thermal or heat pump systems from operating as it is only energised during the normal programmed hot water period.

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Uflex Underfloor Heating RangeGrant’s underfloor heating range consists of two systems – Uflex and Uflex MINI – both of which can be successfully used with a variety of heat sources, from traditional boilers through to renewable heating products such as air source heat pumps. When correctly designed and installed, underfloor heating will allow the heat source to work at its optimal efficiency. Homeowners can therefore not only benefit from the flexibility that this unobtrusive heat emitter offers, but they can also enjoy lower energy bills as a result of improving the overall efficiency of their heating system.

Underfloor Heating by Grant

Highly efficientThe warm water used in underfloor heating systems has a much lower flow temperature, compared to conventional radiator systems, as it feeds into a much larger surface area. This enables it to heat a room very effectively and efficiently.Grant’s underfloor systems operate at their most efficient when they are not frequently switched off and on. The floor screed takes time to heat up, but once up to temperature it only requires a small amount of energy to maintain this. Switching the system off and on, as is commonly the case with a radiator system, results in the floor losing temperature, requiring more heat input to reach that temperature when switched back on again, and so on.Operating systems with a ‘setback’ (unoccupied) control, maintains the floor at a minimum temperature during these times and avoids the wasteful use of energy to reheat the floor from cold. With this type of control the normal room temperature can be achieved during periods of occupancy, but during other periods the ‘setback’ control automatically drops the room temperature to a lower level. This keeps the floor warm and reduces the heat-up time when the control switches back to provide normal room temperature again. Over time, ‘setback’ control will reduce the overall demand on the heat source, increasing system efficiency and lowering running costs.

Optimal control and comfortWhen designing an underfloor heating system, the pipework layout can be easily divided into zones. With both Uflex and Uflex MINI, rooms can either be

split into more than one zone or multiple rooms can be incorporated into one zone. This allows homeowners to precisely control the temperature in a particular room or a space within a room. The temperature delivered is also evenly distributed from one side of the room to the other. The pipework is positioned so that the entire room will receive heat with no ‘hotspots’ or cool draughts. Underfloor systems radiate heat uniformly upwards, achieving a constant temperature throughout the space to deliver ultimate comfort.

Quick & easy installationGrant underfloor heating is supplied as packs specifically suited to meet the requirements detailed in the system designs. From the pipework and connections through to the edging strip and controls, Grant can supply all the components required. Straightforward to install and with the Uflex MINI system suitable to be fitted by a single engineer, Grant’s underfloor range is user-friendly to work with and simple to maintain. Furthermore, Grant can be on hand with a full design service, providing installers with assistance from start to finish.

Dedicated design teamGrant has a Renewables Team who are on hand to provide product and design assistance. This Team has extensive experience in a range of products including air source heat pumps, complementary technologies, and heat emitters such as underfloor. From product specification through to producing full designs, Grant can help installers develop bespoke package solutions to suit the heating needs of their customers.

Quick quote turnaroundSpecifying the required parts to complete an underfloor heating installation can be time-consuming so Grant are able to provide installers with comprehensive quotations, quickly and efficiently. Each quotation will detail the components required to complete the specific job being quoted for. These components can then be supplied as a pack once the order is finalised.

Full design indemnityTo provide complete peace of mind to installers and their end-users, all of Grant’s underfloor heating designs come with indemnity (subject to Terms and Conditions). This reflects the confidence that Grant has in the level of expertise of those within the Team developing and designing the system drawings.

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Suitable Floor Coverings

When using underfloor heating it's important to consider the correct type of floor covering as not all types of finishes are suitable for use with this heat emitter. The objective of underfloor heating is to transfer heat from the system into the room and some floor coverings can restrict this movement of heat. Flooring materials such as tiles and some types of vinyl flooring are low resistance and are therefore ideal for underfloor. Meanwhile, thicker finishes such as certain types of wood and thin carpets have medium resistance which means that some of the heat is retained. Any carpets and overlay which have a combined tog of over 2.5 are not suitable for an underfloor heating system.

IMPORTANT: Always check with the flooring manufacturer to confirm compatibility. Check moisture content of any wood flooring and ensure real wood floor boards are climatised in the laying area for a minimum of one day prior to fitting.

Tile, stone & polished screed Vinyl flooring

Engineered timber & laminate

flooring

Solid hard & soft wood Carpet

üexcellent heat

transferü good heat transfer ü

average heat transfer

üaverage heat

transfer x low heat transfer

üideal for use with

underfloorü

robust & hard wearing

üperforms well

with changes in temperature

xchanges in

temperature can cause warping

xcarpet tog &

underlay must not exceed 2.5

ücan be heated to

up to 29°Cü

can be heated to up to 27°C

ücan be heated to

up to 27°C x

care should be taken when

specifying board width & thickness

x

not recommended for high heat loss

areas such as conservatories

Low resistance0.01 - 0.05m2 K/W

High resistance0.1 - 0.15m2 K/W

Medium resistance0.05 - 0.1m2 K/W

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UflexGrant’s Uflex underfloor heating system is embedded into the floor construction. It is ideally suited for new builds whereby the pipework is installed during the initial stages of the property’s development. The Uflex pipework is then positioned and clipped into place once the flooring’s insulation and membrane has been fitted, after which a sand/cement or flow screed is laid over the top and allowed to fully dry before heat is introduced.

With a drying time of up to thirty days, the Uflex underfloor system can be fitted as part of the floor construction process, therefore causing no delays in construction. Grant’s Uflex system makes underfloor heating a viable option for a wide range of projects, from one-off new build projects and room extensions through to larger multi-property developments.

Screeded system

Unique edge insulation

Simple installation

Features

25year

guarantee*


44

Uflex MINIThe Uflex MINI system differs to Uflex in that it can be installed over any existing sound and level floor surface and is compatible with most types of floor covering. While it is suitable for new builds, Uflex MINI is specifically designed to suit retrofits and renovations, when an underfloor heating system is to be fitted in a property with a floor construction already in place. At just 15mm finished floor height, this underfloor system can be installed incredibly quickly and with minimal disruption to a property’s existing floor and door arrangements.

Grant’s Uflex MINI underfloor heating system consists of self-adhesive panels which are simply placed on top of the sealed floor. The pipework is then clipped into place without the need for staples before a self-levelling screed is laid over the top. The flexible, self-levelling screed used with the Uflex MINI system can be walked on the following day and dries within just three days enabling the heat source to be connected shortly after, restoring heat to a property within a minimal amount of time. With so many installation-friendly features, the Uflex MINI underfloor system can deliver ultimate comfort with minimal hassle.

Only 15mm finished floor height

Fully dry in just 3 days

Quick reaction time

Simple installation

No overboarding required

Suitable for ground floor and first floor installations

Features

25year

guarantee*


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Controls

Intelligent ControlsIn addition to the pipework and components, Grant also supply the necessary controls to operate Uflex and Uflex MINI underfloor heating systems as effectively and efficiently as possible.Two control systems are available that give homeowners complete control of their underfloor heating system at the touch of a button.

Base ProThe Base Pro is a wired control system where the thermostats controlling each zone can be connected by wire to the controller in a ‘daisy chain’ configuration, both simplifying installation and significantly reducing the amount of cable required.

Wave PlusThe Wave Plus is a wireless system where the zone thermostats are not physically connected to the controller and can be situated up to 30m away from it. This system also has the capability to be operated via an app.

Both controls are compatible with either the Uflex and Uflex MINI systems and can deliver a number of intelligent features, including:

Cleverly detects whether the room thermostats are assigned to the correct loop

Maintains the desired comfort setting to ensure the room is always kept warm

Manages room bypass to secure the required water flow for the heat pump

Stores data on the system, carrying out system back-ups and data logging

Visual displays present end-users with room-by-room temperature settings

Auto-BalancingThe controls feature auto-balancing technology which anticipates and adjusts the precise amount of energy required to deliver the optimal level of comfort. This technology removes the need for manual balancing at commissioning. Instead, the control constantly monitors any changes in the conditions indoors or outside and then calculates the energy needed to meet the comfort levels of the occupier. This adaptive technology ensures that the system only uses the right amount of energy at the right time, thus helping to save energy and improve efficiency without compromising comfort.

User friendlyThe visual display provides homeowners with the essential information that they need to know about their system. Using the control, end-users can set the desired temperatures for each room via thermostats, a process which is simple to complete. A supporting app is also available which homeowners can access in order to monitor their home heating while away. The touchscreen display details room-by-room settings and can also assist with troubleshooting, making these controls the ideal partner for a radiant heating system such as underfloor.

A supporting app is also available for use with the wireless Wave Plus Control which homeowners can access in order to monitor their home heating while away.

Simple installationInstalling the underfloor controls is straightforward. With minimal wiring and an easy set-up process, the controls can be installed quickly and with ease. Suitable for new installations and compatible with existing installations, the minimal commissioning saves additional time on site.

Features

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Controls

Smatrix Wave Plus (Wireless) Smatrix Base Pro (Wired bus)

Controller for up to 6 thermostats and 8 actuators Controller for up to 6 thermostats and 8 actuators

Expandable to 12 thermostats and 14 actuators with slave module

Expandable to 12 thermostats and 14 actuators with slave module

Touch screen user interface, controls up to 4 controllers and 48 zones

Touch screen user interface, controls up to 16 controllers and 192 zones

2 thermostat designs 2 thermostat designs

Digital thermostat with backlit display Digital thermostat with backlit display

Room temperature sensor Room thermostat

Floor sensor option Floor sensor option

Heating control Heating control

Pump and valve exercise Pump and valve exercise

No manual balancing required No manual balancing required

Patented “Autobalance” technology independently tested and verified to save up to 20% in energy use

Patented “Autobalance” technology independently tested and verified to save up to 20% in energy use

Micro SD card for data logging, backup and software updates

Micro SD card for data logging, backup and software updates

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Afinia Aluminium RadiatorsThe Afinia Aluminium radiators combine functionality and aesthetics to deliver the ideal partner for both traditional and renewable heating systems. Available in horizontal and vertical options, the Afinia radiators are superb conductors of heat and incredibly responsive, heating up and cooling down quickly. Their curved design and sleek appearance also make them a stylish addition to any room.

Compatibility & flexibility Afinia aluminium radiators can be installed with high and low temperature heating systems which makes them compatible with all of Grant’s heating products. Their performance levels, which comply with European requirements, make the Afinia range an ideal partner for renewable appliances in particular. With their smaller size, compared to steel radiators, the Afinia models work incredibly effectively with air source heat pumps.

Supplied fully assembled and available in both horizontal and vertical options, the Afinia range is adaptive to suit the location where it will be sited. The horizontal radiators are available in three heights – 430mm, 580mm and 680mm – with 6 to 15 section combinations, delivering choice and flexibility when it comes to installation. Meanwhile, the vertical models are supplied with 6 or 8 sections and are available in two heights – 1,842mm and 2,042mm – providing the perfect solution when space is limited.

Simple installationAfinia radiators have a number of features which make for an easy installation. They are light in weight and manageable for a single engineer to install. Each Afinia radiator comes robust steel wall brackets which allow for the straightforward mounting of each radiator. In addition, no electrics are involved with the fitting of these aluminium radiators which allows for a quick installation, reducing installation costs.

Aesthetics One of the distinctive features of radiators’ aesthetics is their curved, rounded surface. This design makes them stylish in appearance allowing them to subtly suit their environs. Slim in build and supplied in an off-white colour finish, Grant’s Afinia radiators can suit many a home’s bespoke requirements.

Peace of mind guaranteedAll the models within the Afinia aluminium radiator range are supplied with a 15 year guarantee, reflecting their quality of build. Following extensive testing and independent verification of the radiators’ efficiency, reliability and output, a market leading 15 year guarantee accompanies the Afinia aluminium radiators to provide complete peace of mind for householders.

Afinia RangeGrant’s Afinia aluminium radiators are more efficient than traditional radiator materials, such as steel and cast iron. Aluminium has excellent thermal conductivity and this, combined with their low water content, makes these radiators incredibly effective. With low energy consumption, Afinia radiators can therefore provide cost savings for householders on their energy bills.

Being a great conductor of heat, aluminium radiators heat up and cool down very quickly, enabling them to rapidly respond to any changes in the temperature demand set via the thermostat. Afinia radiators can heat up a room in a short amount of time once set to do so by the thermostat and, equally, if the temperature setting is reduced, they will cool down quickly as well. This functionality makes the Afinia radiators incredibly adaptive heat emitters, delivering maximum room comfort.

15year

guarantee*


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Afinia Range Technical Specifications

HORIZONTAL

Code Panels OutputW ∆T30Output

W ∆T50Height(mm)

Width(mm)

Section Width(mm)

Depth(mm)

Section Output

W ∆T30

Section Output

W ∆T50

Weight Empty

(kg)

Weight Full(kg)

GALU4306KIT 6 288 552 430 480 80 95 48 92 6.06 7.56

GALU4308KIT 8 384 736 430 640 80 95 48 92 8.08 10.08

GALU43010KIT 10 480 920 430 800 80 95 48 92 10.10 12.60

GALU43012KIT 12 576 1104 430 960 80 95 48 92 12.12 15.12

GALU43014KIT 14 672 1288 430 1120 80 95 48 92 14.14 17.64

GALU5806KIT 6 366 744 580 480 80 95 61 124 8.10 10.14

GALU5808KIT 8 488 992 580 640 80 95 61 124 10.80 13.52

GALU58010KIT 10 610 1240 580 800 80 95 61 124 13.50 16.90

GALU58012KIT 12 732 1488 580 960 80 95 61 124 16.20 20.28

GALU58014KIT 1

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